Video Crad Problem

oops …typo^^^^ New card, week old. FX5600 nVidia-128mb w/fan My card runs well for a while in gaming then the screen gets all grainy and kinda broken up.I have the latest driver from nvidia site. It won't cut out or anything,,, just looks like crap. Not a lot of heat in the case,,have 5 fans running. Any ideas?? It runs fine on internet browsing and normal computer use.

Hi alo- Did you configure BIOS after you installed it. .? Also.. is it an AGP or PCI..? if its PCI then you maybe stuck with it

AGP on a new nvidia based mobo and ya I did